Separable fastener



L' A. LARSSENa SEPARABLE FASTENER- APPLICATION FILED JAN-16,1920.

Patented Aug. 9, 1921.

I five-ni or liars eflndrewlmprss en 53 Exam, (BMW- 31E I 8- 1 5 7 type, in ,which'stud and socket are. locked like parts.

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OElYrAiNE.

Tofall whom it may concern:

Be it known that I, LABS Anormw LARs- S EN,.L subject of theKingof Norway, and a resident of Mattapan District, city of Boston,"in jthecounty of Suffolk and State of. r/fass'achusetts, liave'invented an Improve ment in separable Fasteners, of which the following description, in connection with; the accompanying drawings, is a specification, like'characters on the drawings representing This, invention pertains to improvements in separable fasteners and more particularly,

though. net exclusively, to improvements inseparable fasteners ofthe three-side lock against separating movement produced by a force-producing relative tipping movement in three directions, while permitting separation of stud and socket by a force-producing tipping movement in a fourth direction. f

In the drawings, which show a preferred embodiment of one formof my invention a base portion 8.

' fastener;

Figure 1 is a front elevation of a separable Fig. 2 is a section, partly in elevation, on the line 22 of Fig. 1;

Fig. ,3 is a rear elevation of thes'ocket; and

Fig. 4 is a front elevation of the stud shown in the other figures. y a

As shown in'the accompanying drawings, the preferred form of my invention includes a stud having a head .5, and a neck 6, preferably provided with a shank portion 7, and The preferred form of stud is resilient, being provided with a plu rality of slots, herein shown as four in num-,

so that an opportunity is afforded for resiliency arising primarily in the base of the stud along lines between the ends of the adjacent cuts. r

The stud described in the preceding para- .graph preferably cooperates with a socket providing a stud-receiving aperture adapted to engage the neck 6 of the stud and of such effective size that the head 5 of the stud can pass therethrough when compressed.

The shoulder between the head 5 of the stud and the neck 6 preferably slopes someand socket easily effected? 1 germane 'rnstrnnnn.

v Specification ofLettersPatent;- P m ted A 'g), 1921 Application madame 16,1920. Serial no. 351,771 r what so thatwhen the' stud anddsocket are] tipped, one relative toIthe-othen'the head wlll be compressed and 1 separation of stud Tipping movemen I is preferably precluded inall directionsexcept one, viz., that directionproduced by apullon thejbottom of the socket shown by'an arrow infFig. 2 of the drawings. lThis may conveniently be effected providing an elongated opening adapted to engage the shank of the-stud on three sides,fto preventsub'stantial tipping, while I leave sufficient clearance on the fourthside ftov permit any desiredamount ,of tipping.

' In the preferred'constru'ction shown in the drawings, Ihave provided an aperture, the sides of which are adapted to engage the neck 6 in a jawplate 1,0,ia'nd I'have limited the directions of tipping movement by a 'shank-engagingplate" ll havingflan elongated aperture thereinwhich may be pro;

vided with a curb to increase the amount of bearing surface. v

The plates "10'. and 11' m'ay .conveniently be secured to a curtainl2' by a fastening plate 13 located on the oppositesides'of'the curtain and. having prongs .fll adapted to proect through the..curtain,' and preferably through the: plates '10: and 11, and to be clenched: thereon as best-shown in"Fig. 3. f While lhaveshownand described a preferred form of one embodiment of'my invention, it will be understood that change'sKinvolving omission, K substitution, alteration and reversal ofparts, and even changes in the mode of operation, may be made without departing from the scope of my invention,

which is best defined in the following claims.

Claims: a p 1. Astud for separable fasteners 1n'clud-. ing a head, a neck, a shank portion and base portion, the combined length ofsaid head, neck and shank portions being substantially greater than the diameter of any of them, said, head portion, said neck' portion, said shank portion and a part of said base portion being slotted to" provide a resilient stud having the resiliency initiating in the'base portion.

2. A stud for separable fasteners having a head, a neck, a shankiand base, the cornbined length of said head, neck and shank portions being substantially greater than the diameter of any of them, said head, neck" and shank being divided throughout their entire length by a slot terminating in said base portion. p

A stud for separable fasteners having a head, a neck, a shank and a base, the combined length of said head, neck and shank portions being substantially greater than the diameter of any of them, said head, neck and shank being divided throughout their entire length by a plurality of slots terminating in said base portion.

4. A stud for separable "fasteners having a head, a'neck, a shank and a base, the combined length of said head, neck and shank portions being substantially greater than the diameter of any of them, said head, neck and shank being divided throughout their entire length by tWo slots at right angles to one an other and terminating in said base portion.

5. A. stud tor separable fasteners having a head, a shank and a neck, the combined length of said'head, neck and shank portions being substantially greater thanthe diameter of any of them, said stud slotted in planes extending longitudinally thereof and, ex cept for the slots, said stud beingsymmetrical in cross-section.

6. A separable fastener comprising, in

combination, a resilient stud having a head and a neck, said stud slotted to provide resiliency, and round in cross-section, and a socket providing an aperture therein adaptcd to permit passage of the head of said stud When compressed, the margins of which are adapted to engage said neck when in juxtaposition thereto, said socket including limiting means opposing relative tipping movement of said stud and sec et in one direction, While permitting such relative tipping movement in another direction.

7.A separable fastener comprising, combination, a resilient stud having a head and a neck, said stud slotted to provide resiliency, and round in cross-section, and a socket providing an aperture therein adapted to permit passage of the head of? said stud when compressed, the margins of Which are adapted to engage said neck When in JHXiLELPOSltlOn thereto, said socket including limiting means opposing relatlve tlpping movement of said stud and socket in three directions, While permitting such relative tipping movement in a fourthdirection only. 8. A separable fastener comprising, in combination, a stud and socket, said stud slotted longitudinally to provide resiliency and adapted to function Without change irrespective of turning thereof about its longi-. tudinal axis relatively to said socket, and said socket providing stud-engaging jaw means and means on the socket tor'limiting the directions in which said stud and socket may be tipped one relative to the other.

2). A separable fastener comprising, in combination, a stud having a headand a neck; and a socket; said stud and socket separable by relative tilting movement in one dir ction only; saic socket providing a studreceiving orifice having unyielding jaw means on opposite sides thereof for engagement with the neck oi the stud; said stud being generally symmetrical in cross-section,

being resilient, and being adapted to have its head enter the orifice in the socket in any relative radial position, thereby to provide a three-side loci-k fastener having the resiliency' in the stud and in which no determined radial registration of the stud With the socket is necessary. I

10. A separable fastener comprising, in combination, a stud generally round in crosssection and providing a head and a neck, said stud slotted longitudinally to provide resiliency, and a socket providing a portion closely fitting said neck of said stud, and a second portion, rearwardly of the first-mentioned portion, for limiting the direction of possible relative tipping movement between stud and socket.

in testimony whereof I have signed mv name to this specification.

LABS ANDREW LARSSEN; 

